demand
the desire to own something and the ability to pay for itie: a house
law of demand
consumers buy more of a good when its price decreases and less when its price increasesie: $1 slice of pizza you can buy two..but would you buy two if a slice was $2?
substitution effect
when consumers react to an increase in a good's price by consuming less of that good and more of other goodsie: finding old Jordan's vs buying the brand new pair
income effect
the change in consumption resulting from a change in real incomeie: luxury car
demand schedule
a table that lists the quantity of a good a person will buy at each different price ie: how does the market demand for pizza change when the price falls from $2.50 to $1.00 a slice? page 81
market demand schedule
a table that lists the quantity of a good all consumers in a market will buy at each different priceie: page 82 how many slices of pizza does she demand when the price is $1.50?
demand curve
a graphic representation of a demand scheduleie: page 83 how is the market demand curve similar to Ashley's demand curve
ceteris paribus
a Latin phrase that means "all other things held constant"ie: When we counted the number of pizza slices that would sell as the price went up or down, we assumed that nothing besides the prize of pizza would change.
normal good
a good that consumers demand more of when their incomes increaseie: An increase in Ashley's income from $50 per week to $75 per week will cause her to buy more of a normal good at every price level
inferior good
a good that consumers demand less of when their incomes increaseie: used books
complements
two goods that are bought and used togetherie: Ski boots and skis
substitutes
goods used in place of one anotherie: snowboards are a substitute for skis, because consumers will often buy one or the other, not both.
elasticity of demand
a measure of how consumers react to a change in priceie: lemonade from .25 cents to $25.00
inelastic
describes demand that is NOT very sensitive to a change in priceie:
elastic
describes demand that is very sensitive to a change in priceie:
unitary elastic
describes demand whose elasticity is exactly equal to 1ie: $2 for a magazine when the price raises 50% to $3 the newsstand will sell exactly half as many copies as before
total revenue
the total amount of money a firm receives by selling goods or servicesie: Pizzeria sells 125 slices of pizza per day at $2.00 per slice, total revenue would be $250 per day
Market demand schedule example pg 83 #6
Cost to play a game Games played per month$1.50 350$2.00 250$3.00 140$4.00 80